Update drupal-update.yml

Print output on failure too.

Author: Jelle-S

.github/workflows/drupal-update.yml

@@ -148,8 +148,7 @@ jobs:
         id: composer-update
         run: |
           echo "Running composer update..."
-          output=$(composer update --no-scripts 2>&1)
-          composer_exit_code=$?
+          output=$({ composer_exit_code=0 && composer update --no-scripts 2>&1; } || { composer_exit_code=1; })
       
           # If composer update fails, exit with a non-zero status
           if [ $composer_exit_code -ne 0 ]; then